When we last checked in with the #7 extension to the far west side of Manhattan, it was supposed to open for revenue service during the second quarter of this year — meaning April to June.

But that seems increasingly unlikely. On Monday, MTA executive Anthony D'Amico updated board members on the $2.4 billion project.

"It is very likely that the opening of the station will not occur until several weeks following the second quarter of 2015," said D'Amico.

One problem: installation of the Ethernet (computer network) system, which affected escalators, elevators, fire alarms, fans and traction power. Until that is resolved, testing for the fire alarms and communication systems can't be completed.

Another area of uncertainty are the 10 caissons real estate developer Related is drilling and sinking between two large MTA-owned stairwells. The caissons will anchor a platform being built to hold future skyscrapers.

"If all goes well as planned, it shouldn't affect us," said D'Amico. But: "If they run into some complications while drilling, it could affect our schedule."

Meanwhile, the station looks good. "If you walk through the station today," he said, "you will encounter a massive three-level structure, beautifully done with the utmost attention to quality and detail."

See for yourself below. And see more photos of the new station here.

A mosaic in the #7 station under construction at 34th Street and 11th Avenue

(MTA )

A token booth at the #7 subway extension under construction at 34th Street and 11th Avenue

(MTA )

Escalators at the #7 station at 34th Street and 11th Avenue

(MTA )

The mezzanine level of the #7 train extension to the far west side

(MTA )

Subway tracks at the #7 train extension

(MTA )